Allow retrieving of non-standard git URIs

Non-standard git URIs are ones that do not start with 'git:' nor end
with '.git'. An example of non-standard git URI is
'ssh://server/home/user/repo'.

The mechanism for specifying a non-standard git URI is done by
prefixing the whole URI with 'git:' to signify that it should be
handled with the git resolver. For example, non-standard git URIs like
'git:ssh://server/user/repo' and 'git:https://server/user/repo' can
now be used.

main/Build.scala

@@ -57,7 +57,9 @@ object RetrieveUnit
 
 	object Path
 	{
-		def unapply(uri: URI) = Option(uri.getPath)
+		import RichURI.fromURI
+
+		def unapply(uri: URI) = Option(uri.withoutMarkerScheme.getPath)
 	}
 }
 object EvaluateConfigurations

main/Resolvers.scala

@@ -63,7 +63,7 @@ object Resolvers
 			}
 		}
 
-		val uri = info.uri
+		val uri = info.uri.withoutMarkerScheme
 		val staging = info.staging
 		Some {
 			() =>

util/io/RichURI.scala

@@ -20,6 +20,19 @@ class RichURI(uri: URI)
 			new URI(uri.getScheme, uri.getSchemeSpecificPart, null)
 		else
 			uri
+
+	def hasMarkerScheme = new URI(uri.getSchemeSpecificPart).getScheme ne null
+
+	def withoutMarkerScheme =
+	{
+		if (hasMarkerScheme)
+			if (hasFragment)
+				new URI(uri.getSchemeSpecificPart + "#" + uri.getFragment)
+			else
+				new URI(uri.getSchemeSpecificPart)
+		else
+			uri
+	}
 }
 
 object RichURI